Thyroid scintigraphy was performed to find out any thyroid tissue localization; and ectopic thyroid
tissue was detected in the submental midline that was also confirmed by USG.
This case presented to us with respiratory distress due to tracheal compression by the ectopic thyroid
Paraffin blocks of four human ectopic thyroid
samples were retrospectively collected from patients who underwent thyroid resection, and two flash-frozen tissue samples removed due to symptoms (sample 4) or suspicious cytology for papillary thyroid lesion (patient 2) were also included in the study.
Kim, "A case of an ectopic thyroid
gland at the lateral neck masquerading as a metastatic papillary thyroid carcinoma," Journal of Korean Medical Science, vol.
Salam, "Ectopic thyroid
mass adherent to the oesophagus," Journal of Laryngology & Otology, vol.
A 24 hours I-123 uptake and scintigraphic scan were performed for further functional characterization of this ectopic thyroid
tissue mass within the mediastinum.
tissue in the thyroglossal cyst duct: Rare clinical entity with review of literature.
tissue--a review of the literature.
An ectopic thyroid
follicular carcinoma was considered a differential in this case because of the morphology and location of neoplastic cells and the accompanying changes in the thyroid glands.
It can be classified into four categories: (1) thyroid carcinoma or microcarcinoma as an incidental finding after total thyroidectomy for benign mass, (2) radiological incidental finding of thyroid carcinoma with positive FNA result, (3) apparent thyroid metastasis with primary tumor unidentified prior to final histological specimen, and (4) symptomatic ectopic thyroid
tissue with apparent metastasis .
But in contrast to our patient, who had been in hypothyroid state due to iatrogenic total excision of ectopic thyroid
gland, which was the only source of thyroid hormones for our patient, without any replacement therapy, their patient had experienced iatrogenic hypothyroidism due to a drug interaction between orlistat, an over the counter medication to help lose weight, and levothyroxine which had been previously prescribed for her hypothyroidism
The clinical differential diagnosis includes ranula, dermoid cyst, thyroglossal duct cyst, ectopic thyroid
tissue, pleomorphic adenoma and mucoepidermoid carcinoma, angiolipoma, fibrolipoma and malignant lymphoma.9-11 A histopathologic differential diagnosis appropriate to the oral cavity would include fibrosarcoma if spindle cells are not localized and numerous.12 Other lesions should be also considered: they include schwanoma, myxoidneurofibroma, leiomyoma, nodular fasciitis, myxolipoma, fibrolipoma, malignant fibrous histiocytoma, myxoidliposarcoma, and myxoid solitary fibrous tumor.